59062-13-4 ACETIC ACID, CYANO((4-NITROPHENYL)HYDRAZONO)-, BUTYL ESTER BRN 1826305 Cyanoglyoxylic acid butyl ester 2-(p-nitrophenyl)hydrazone Glyoxylic acid, cyano-, butyl ester, 2-(p-nitrophenyl)hydrazone